package cn.sz.dzy.sgg.netty.groupchat;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

/**
 * @version : v1.0.0
 * @program: netty-demo
 * @description:
 * @author: DingZhenYun
 * @create: 2025-03-09 18:41
 **/

public class GroupChatServer {
    //监听端口
    private int port;

    public GroupChatServer(int port) {
        this.port = port;
    }

    //编写run方法，处理客户端的请求
    public void run() throws Exception {
        //创建两个线程组
        NioEventLoopGroup boosGroup = new NioEventLoopGroup(1);
        NioEventLoopGroup workerGroup = new NioEventLoopGroup(1);//32个NioEventLoop
        try{
            ServerBootstrap sb = new ServerBootstrap();
            sb.group(boosGroup,workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 128)
                    .childOption(ChannelOption.SO_KEEPALIVE,true)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            //获取到pipeline
                            ChannelPipeline pipeline = ch.pipeline();
                            //向pipeline加入解码器
                            pipeline.addLast("decoder", new StringDecoder());
                            //向pipeline加入编码器
                            pipeline.addLast("encoder", new StringEncoder());
                            //加入自己的业务处理handler
                            pipeline.addLast(new GroupChatServerHandler());
                        }
                    });
            System.out.println("netty 服务器启动");
            ChannelFuture channelFuture = sb.bind(port).sync();
            //监听关闭
            channelFuture.channel().closeFuture().sync();
        }catch (Exception e){
            boosGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }

    public static void main(String[] args) throws Exception {
        new GroupChatServer(7000).run();
    }
}
